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Technical Articles for Part Number CCA-42-601-11
COMP Cams Thumpr Hydraulic Roller Camshafts
Camshaft, Hydraulic Roller, Duration 291 Int./311 Exh., Lift 0.540 Int./0.532 Exh., Lobe Separation 107, Oldsmobile, 260-455, Each
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Overview
Brand:
Manufacturer's Part Number:
42-601-11
Part Type:
Product Line:
Summit Racing Part Number:
CCA-42-601-11
UPC:
036584312970
Cam Style:
Hydraulic roller, Retro-fit
Camshaft Use:
Street/Strip
Basic Operating RPM Range:
2,000-5,800
Intake Duration at 050 inch Lift:
235
Exhaust Duration at 050 inch Lift:
249
Duration at 050 inch Lift:
235 int./249 exh.
Advertised Intake Duration:
291
Advertised Exhaust Duration:
311
Advertised Duration:
291 int./311 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.540 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.532 in.
Valve Lift with Factory Rocker Arm Ratio:
0.540 int./0.532 exh.
Lobe Separation (degrees):
107
Camshaft Gear Attachment:
1-bolt
Remanufactured:
No
Computer-Controlled Compatible:
No
Grind Number:
291THR7
Valve Springs Required:
Yes
Quantity:
Sold individually.
COMP Cams Thumpr Hydraulic Roller Camshafts
COMP Cams has awakened the muscle car sound--and it is nastier than ever! Thumpr Series camshafts is a line of cutting-edge hydraulic roller camshafts for engines originally equipped with flat tappet cams. With them, you can expect a substantial power increase without sacrificing reliability or ease of maintenance! The lobe profile and grind characteristics of Thumpr cams include blending an early exhaust valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap. This maximizes rough-idling tendencies, delivering a seriously aggressive exhaust note without affecting engine power output. Thumpr camshafts are available in a variety of grind profiles, each producing impressive horsepower and torque performance within a different rpm range.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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